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Design and Development of a Dual Operating Mode Microstrip Patch Antenna for Unmanned Aerial Vehicle Synthetic Aperture Radar
Poi Ngee Tan;Tien Sze Lim;Gobi Vetharatnam;Yee Kit Chan
PIER C , 2012, DOI: 10.2528/PIERC11121901
Abstract: Microstrip patch antenna has been designed and developed for Unmanned Aerial Vehicle based Synthetic Aperture Radar (UAVSAR). This antenna operates in C-Band at the frequency of 5.3 GHz with a bandwidth of 80\,MHz. The radiation patterns of the antenna were specified to provide a desired scanned area for UAVSAR. The UAVSAR antenna was designed in the form of combination of 3 subpanels to allow dual operating mode (single antenna or dual antenna) selection. Two feed points are provided to the feeding network of each subpanel to reduce undesired power loss. The developed antenna prototype meets the performance requirements of UAVSAR system. It shows promising results in the UAVSAR flight mission conducted in Mersing area, Malaysia for both operating modes.
Aperture coupled stacked patch antenna for dual band
Rajesh Kumar Vishwakarma,Sanjay Tiwari
International Journal of Electronics and Computer Science Engineering , 2012,
Abstract: -Microstrip antennas (MAS) are very useful antenna where low profile antennas are required. They are most popular due to their small size, low cost, light weight. The first aperture coupled microstrip antenna was introduced in 1985 by D M Pozar. Aperture coupled antenna is a particular antenna with high gain and wide bandwidth. This paper presents aperture coupled stacked patch antenna using air gap variation. The variation of air gap [2mm to 6mm] has been done between single patch antenna and an aperture coupled antenna. The main advantage of this antenna to increase the band width of the antenna as compared with single layered patch antenna. The resonant frequencies changes with air gap variations. The feed can be done either a conventional coaxial probe or through a coupling aperture in the ground plane as we done. This antenna works well in the frequency range (2.9 GHz to 6.0 GHz). The measured return loss exhibit an impedance bandwidth of 35%.The input impedance and VSWR return loss have been measured with the help of Network analyzer. [Agilent E8363B A.04.06] From the measured result it is found that the value of VSWR corresponding lower resonance frequencies increases from 14 to 2.2 with increasing air gap variation where as at the upper resonance frequencies is also increased from 1.8 to 2.3.
Dual Frequency Single Aperture Microstrip Patch Antenna Element for SAR Applications
Pandey B,Pandey A,Chakrabarty S,Kulshrestha S
IETE Technical Review , 2007,
Abstract: This paper presents the design of a dual frequency microstrip patch antenna. The design is presented at C and X band with centre frequency at 5.35 and 9.6 GHz respectively. The radiating element at C band is a microstrip patch while the radiating element at X band is a slot. Simulated and measured data are presented as a function of geometrical parameters.
Compact Dual Band Microstrip Antenna for Ku-Band Application  [PDF]
M.T. Islam,N. Misran,A.T. Mobashsher
Information Technology Journal , 2010,
Abstract: A new design of dual band compact microstrip antenna is proposed for Ku-band applications. Dual band is achieved using three pairs of thin slits from the sides of a rectangular patch and feeding with a microstrip feedline. The antenna has a compact structure and the total size is 9.50 by 10 by 0.254 mm. The result shows that the return loss of -23.83 dB is achieved at the first resonant frequency of 12.54 GHz and -14.04 dB is obtained at the second resonant frequency of 14.15 GHz. The antenna gives a stable radiation performance with gain greater than 4 dBi over the frequency band.
Design a Circular Microstrip Patch Antenna for Dual Band
Arun Singh Kirar,Veerendra Singh Jadaun,Pavan Kumar Sharma
International Journal of Electronics Communication and Computer Technology , 2013,
Abstract: This paper presents a circular patch microstrip antenna operate in dual band (1.66 GHz and 2.777GHz). The proposed Circular patch antenna will be in light weight, flexible, slim and compact unit compare with current antenna used in dual band [1]. The paper also presents the detail steps of designing the circular patch microstrip antenna and the simulated result. IE3D software is used to compute the gain, power, radiation pattern, and S11 of the antenna.
Dual Band U- shaped microstrip antenna for wireless Communication
Vinod K. Singh,,Zakir Ali
International Journal of Engineering Science and Technology , 2010,
Abstract: This paper presents novel coaxial feed, microstrip antenna with wide bandwidth. This U-shaped microstrip antenna offers a dual band. Low profile, light weight, easily mounted and broad bandwidth are theprinciple characteristics for antenna designed for wireless pplications. The microstrip antenna is suitable for wireless applications except for its narrow band width. This paper suggests an alternative approach in enhancing the band width of microstrip antenna for the wireless application operating at a frequency of 2.5 GHz. A bandwidth enhancement of more than 7% was achieved. The measured results have been compared with the simulated resultsusing software IE3D version-9.0.
Design of a Fractal Dual-Polarized Aperture Coupled Microstrip Antenna
Hai Rong Cheng;Xiao-Qun Chen;Lei Chen;Xiao-Wei Shi
PIER Letters , 2009, DOI: 10.2528/PIERL09060102
Abstract: In this paper, a fractal dual-polarized aperture-coupled microstrip antenna is presented. The proposed antenna adopts 1st Minkowski fractal patch and is fed by the aperture-coupled structure with H-shaped and H-shaped loaded capacitance. The size of Minkowski fractal patch is reduced by 20% compared with a square patch. Results show that the T/R isolation is better than 35 dB, improved by 2 dB compared with the double H-shaped slots. The gain is more than 8 dB, and the front-back ratio is greater than 20 dB in the operating frequency range. Both simulated and experimental results are in good agreement.
Design of Stacked Microstrip Dual-band Circular Polarized Antenna
N. Zakaria,S. K. A. Rahim,T. S. Ooi,K. G. Tan
Radioengineering , 2012,
Abstract: This study introduces a new design of dual-band circular polarized (CP) microstrip antenna for ISM band applications (2.45 GHz and 5.8 GHz). The proposed dual-band CP microstrip antenna with compact design has achieved design intention of having return loss of < 10 dB and axial ratio of < 3 dB for both frequencies of 2.45 GHz and 5.8 GHz. The antenna has been successfully designed, fabricated, simulated, and measured and it shows the advantages of good dual-band and CP performances. Thus, the obtained results confirm satisfactory performance and good agreement.
A Circularly Polarized Aperture Stacked Patch Microstrip Antenna for L Band
Fei Zhao;Tingting Liu;Zuping Qian
PIER C , 2011, DOI: 10.2528/PIERC10112703
Abstract: The design and manufacture of a circular polarized aperture stacked patch circular microstrip patch antenna (CPASPA) at L-band is presented. The Wilkinson power divider is used to excite the stacked circular patches by two orthogonal $H$-shape slots, which can improve the operation bandwidth and circularly polarized performance. The design is optimized by a series of parametric study of the input impedance for the antenna. The measurements show that the CPASPA has a 3-dB axial ratio (AR) bandwidth of 55.0% and a 10-dB return loss (RL) bandwidth of 47.0%. The measured gain is more than 0 dBic over the bandwidth of 42.5%, in which the maximum is 9.4 dBic. The measurements agree very well with the simulation results.
Electromagnetic Band Gap Structures Incorporate with Dual Band Microstrip Antenna Array
Thelaha Masri;Mohamad Kamal A Rahim;Osman Bin Ayop;Farid Zubir;Noor Asmawati Samsuri;Huda Abdul Majid
PIER M , 2010, DOI: 10.2528/PIERM10011401
Abstract: A Dual band Microstrip Antenna Arrays (DbMSAA) incorporated with Mushroom Electromagnetic band Gap (MEBG) and modified Minkowski Electromagnetic Band Gap structures to further improve its radiation characteristics is reported in this work. The two different types of EBG structures work like a Band Rejecter (BR), separating the branch of feed line feeding two different groups of patch antenna arrays operating at 2.4 GHz and 5.8 GHz, thus making them operate individually at their particular frequencies, simultaneously. Initially, the possibilities of having a uniform and controlled radiation patterns are quite complicated to achieve due to the single port feeding technique used and developments of grating lobes at the higher band frequency, but, through the incorporation of the EBG structures, the problems could be solved immediately. The antenna's performance is improved where the grating lobes at 5.8 GHz are diminished, and the radiation patterns of the dual band antenna at both frequencies become more symmetrical with increased gain.
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